Analysis of a large linear antenna array of uniformly spaced thin-wire dipoles parallel to a perfectly conducting plane

A method of moments solution is presented for the analysis of a large linear antenna array of uniformly spaced thin-wire dipoles parallel to an infinite perfectly conducting plane. A single piecewise sinusoidal expansion and testing function per dipole is used in a Galerkin procedure. This results in a symmetric Toeplitz generalized impedance matrix requiring approximately 2N-squared multiplications and divisions to determine the unknown dipole currents. The solution corresponds to a savings of a factor of N/6 over a Gaussian elimination solution. Computed results are given for a 1000-element dipole array.